ITEM NAME:M15 M26 Replacement Parts Road Bike Multifunction Self Extracting Crank Arm Bolt Features: Crank arm bolts are designed for MTB and road bikes. Self-extracting design, no other tools needed, easy to install. To replace the screws removed from the m18/m30 crank arm. Made of alloy material, durable and not easy to break. The direction of loosening the screw of the external plug is clockwise. Specifications: Material: Alloy Color: Black+Silver Size(Approx.): M15, M26 Package Included: 1 *&;nbsp;Crank Arm Bolt Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement..Size(Approx.). : M15, M26. To replace the screws removed from the m18/m30 crank arm. 1 &;nbsp;Crank Arm Bolt. Made of alloy material, durable and not easy to break. Due to the light and screen difference, the item's color may be slightly different from the pictures.