The Bat Pin Wrench makes tightening and loosening your bat pins a breeze, and doubles as a storage case for your bat pins. Specifications Supports up to 1-1/4" bat pins and fits under most wheel heads. make sure there is 5cm of clearance below your wheel head.Material: PETG and High Carbon SteelDimensions: 4cm x 4cm x 8cmHex Allen Bit: 3/16" x 1" x 1/4"5/8" Bat Pins: 1/4-20 x 5/8" Socket Head Cap Screws, 304 Stainless Steel1-1/4" Bat Pins: 1/4-20 x 1-1/4" Socket Head Cap Instructions Once you've loosely threaded your wing nut onto your bat pin, you can place both halves of the Bat Pin Wrench around your bat pin and wing nut and twist to firmly tighten. To loosen, simply place the top half onto the pin and loosen.When you are not using your bat pins, you can store them inside of the wrench. Note: store the bat pins apart from the wingnut