Belt wrench (Riemenschlüssel) Purpose: Designed to grip belts, jars or round housings securely without scratching. Benefit: Stylish, high-visibility color makes the tool easy to find in the kitchen or workshop and simple to recognize and grab when needed. Key attributes: compact design, easy-to-use operation, suitable where a soft but strong gripping surface is required. Oil filter strap wrench for high load (Ölfilter‑bandschlüssel) Purpose: Strap-style oil filter wrench built for high-stress use on automotive and mechanical filters. Benefit: Handles a range of sizes and resists slipping under torque, making it useful for both DIYers and professionals. Key attributes: multifunctional strap design, suitable for oil filters, various screws and nuts where a flexible grip is needed. Water key / adjustable bottle opener (Wasserschlüssel) Purpose: Adjustable tool designed for practical, everyday opening and turning tasks. Benefit: Simple, reliable operation makes it a practical household tool for opening bottles, turning stubborn caps or small fittings. Key attributes: adjustable fit, easy to operate, compact and convenient to keep in the kitchen or utility drawer. Oil filter cap wrench (Ölfilterkappenschlüssel) Purpose: Cap-style wrench for removing or installing oil filter caps and similar round components. Benefit: Constructed from non-slip, durable material for a secure grip and easy handling even under oily or greasy conditions. Key attributes: non-slip material, durable construction, ergonomic grip; works well alongside pipe wrenches and other hand tools. Key benefits — why you need this set Reliable grip: Strap and cap designs provide secure, non-marring contact with round or smooth surfaces where standard pliers can slip or cause damage. Versatile: Suitable for vehicle maintenance, household tasks and workshop jobs; the adjustable elements allow one tool to cover multiple sizes. Durable and practical: Built for repeated use under higher loads; non-slip materials improve safety and control. Easy to locate and use: High-visibility color and compact form factors make these tools convenient to store and quick to retrieve. Important attributes Function: belt/strap gripping, oil filter removal, cap engagement, adjustable opening/turning. Compatibility: Designed for a range of filter sizes, bottle caps, round housings and small fittings; compatible with standard workshop and household tasks. Material & performance: Durable, non-slip materials for a secure grip; strap and cap formats resist slipping under torque; adjustable designs fit multiple sizes. Ergonomics: Designed for easy handling and control in greasy or confined conditions. Practical use scenarios 1. Oil change on a car or motorcycle: use the oil filter strap wrench to securely grip and remove a worn or slippery filter, then use the cap wrench to install the replacement filter without damaging the cap. 2. Kitchen and household tasks: quickly find the belt wrench or adjustable bottle opener to open a stuck jar or bottle cap without scratching lids or using excessive force. 3. Workshop and plumbing jobs: use the cap wrench and strap wrench to turn round housings, pipe fittings or small pumps where standard pliers cannot get a safe, even grip. What to expect in everyday use Tools that reduce slipping and surface damage when removing or installing round components. Adjustable options that minimize the number of separate wrenches needed for routine maintenance. Sturdy, non-slip surfaces that maintain grip in oily or wet conditions, improving safety and control. Usage tips For best results on oil filters, position the strap evenly around the filter and apply steady torque. Use the cap wrench to engage the filter cap fully to avoid rounding the edges. Store the tools in a visible place in the kitchen or garage to take advantage of the high-visibility color and quick accessibility. This set provides practical, durable tools for oil filter work, household opening tasks, and general workshop use while minimizing surface damage and slipping.