M10 x 1.25 Part # 1012C all the tools and 5 inserts M10x1.25x20mm length. NOTE: IF YOUR BLIND HOLE IS NOT 26mm deep or 1.023" inches DO NOT USE THIS KIT THE INSERTS ARE TOO LONG use (Kit P/n 1012F which includes a slightly shorter insert 16.2mm your hole must be at least 22mm deep). Commonly used in HONDA alternator bolt repair.