Technic, Liftarm Thin 1 x 3 - Axle Holes : Part 6632 | BrickLink
Amazon.com: Gobricks GDS-689 Liftarm Thin 1 x 3 - Axle Holes Compatible with Lego 6632 All Major Brick Brands Toys Building Blocks Technical Parts Assembles DIY (199 Dark Bluish Gray(072),40 PCS) : Toys & Games