HCS AMG HO Slot Car Tools - Pinion Gear Tool Harden Creek Slot Cars pinion gear tool. Makes removing, adjusting, and replacing pinion gears on in-line motor HO slot cars easier.Pinion capturing pockets are made to handle many popular 7 and 8 tooth gears. Top pocket with the .063" nipple hole is a general application hole.The middle pocket with the .062" nipple hole is great for HCS, JAG, and BSRT 8T gears.The bottom pocket with the .060" nipple hole is for Viper and BSRT 7T gears.Blue anodized aluminum with laser engraved numbers.CHECK OUT MY OTHER AUCTIONS!! PLEASE ADD ME TO YOUR FAVORITE SELLERS LIST. Thanks for looking. Good luck bidding from HCSlots !