KEY TO REMOVE HEAD BOLTS  1/2” x 17 mm (12 kąt)

The key to removing the cylinder head bolts without removing the components when working on engines M401, 404, 407-409, 421-424, 427, 428, 444, 447.

Lenght: 165mm 

Size:1/2″Dr.x17mm(12kat) 

Material:stal Cr-Mo