Product purpose and key benefits Prevents rear-wheel slipping on children's single-speed bicycles, improving safety and control. Designed for use with rear-wheel / rear-entry (HeckEinstieg) and track-style bikes to reduce accidental wheel movement. Helps riders and caregivers avoid falls or bike instability during parking, mounting, dismounting, or low-speed maneuvers. What it does (function) Acts on the rear wheel area to stop or reduce unwanted sliding or rolling. Minimizes the chance of the bike shifting when stationary or when a rider puts weight on the rear side. Supports safer handling for young riders learning balance and for adults assisting them. Compatibility and fit Intended for children’s bicycles and single-speed bikes. Suited to bikes with rear-entry or track-style rear frame layouts. Check your bike’s rear frame and wheel configuration to confirm fit before installation. Performance and practical attributes Reduces rear-wheel movement to improve stability when stopping, mounting, or parking. Simple to operate during everyday use and when assisting a child on the bike. Designed to integrate with the rear area of the bike without affecting normal riding performance. Use scenarios Parking on a slight incline: prevents the rear wheel from slipping when the child dismounts. Mounting or dismounting: stabilizes the bike so an adult or child can get on and off safely. Training and practice rides: provides a more secure stopping point during balance and control lessons. Notes This product is focused on reducing rear-wheel slippage for children’s single-speed and track/rear-entry bikes. Refer to the product specifications for details on installation compatibility with your specific bike model.