ITEM NAME:With Screws Pull Starter RC Car Recoil Start Metal Practical Durable For R020 20 Features: One-way Bearing: For 12mm across flat one way bearing, with 6mm shaft diameter. Function: Can be used for replacing old or damaged part of RC car. Material: Made of metal material, durable and not easy to break. Applicable Usage: Suitable for home DIY, RC toy car shop and so on. Compatible Model: For R020 16, for R020 18, for R020 20, please confirm model before purchasing. Specifications: Material: Metal Color: Black Pull Starter Size: About 30x30x3 mm(L*W*H) Pull Starter Center Hole Spacing: About 27 mm One-way Bearing Size: About 12x6 mm(Outer Diameter*Inner Diameter) Compatible Model: For R020 16, For R020 18, For R020 20 Package Included: 1 pc*&;nbsp;Pull Starter 1 pc*&;nbsp; One-way Bearing 4 pcs Screws 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..Compatible Model: For R020 16, For R020 18, For R020 20. Pull Starter Center Hole Spacing: About 27 mm. Pull Starter Size: About 30x30x3 mm(L W H). 1 pc &;nbsp;Pull Starter. 4 pcs Screws. Anyway we will try our best to avoid this kind of thing.