Spin-Pull-Spin Ultra BP-60(M4-M12 Mandrels Included)• This rivet nut tool features a SPIN-PULL-SPIN setting sequence.• The BP-60 Rivet Nut tool has a fully adjustable stroke for accurate insert placements, which requires less operator skill.• Comes complete with sizes M4 through M12.• "More Power" means this tool uses its huge 6800 lbs. of pulling force to set up to 1/2 (M12) steel rivet nuts with ease.