Grey Pneumatic's 4-Point Pipe Plug Sockets are offered in an 11pc. set, No. 1211P, and contain male sizes 3/16" to 3/8" and female sizes 1/4" to 3/8". Sockets come in a molded storage case and carry a lifetime warranty. Pipe Plug Sockets are ideal for the removal of manual transmission, transfer case, engine oil pan, differential housing drain, fill plugs and various other applications for both foreign and domestic vehicles.