Two bit holders with Hex shanks. 1/4"D x 1/4" Hex & 3/8"D x 5/16" Hex for driving bits with 1/2"D or 3/8"D socket accessories. Two Hex shank sizes. 1/4"D x 1/4" Hex. 3/8"D x 5/16" Hex. Laser Tools 6371 14mm 3/8 Drive Spark Plug Wobble Socket FITS BMW Double Cut LL.
