Input Drive Size: 1/2" Drive Shape: Square Length: 50mm Type: Lock Nut Buster for Lock Nuts Output Size: 18mm Product Dimension (Refer Line Drawing Image): D1 Size: 21mm D2 Size: 25mm H Size: 15mm L Size: 50mm 1/2 Sq. Dr. Lock Nut Buster 18mm Length 50mm For Lock Nut