Features and Benefits:Contains Heli-Coil installation tool, a quantity of inserts and complete instructions12 InsertsDrill size: 1/4

Features and Benefits:Thread Size and Length: M5 x 0.8 x 7.5mmInserts Per Kit: 12Tool Type: 3Insert Qty.: 12Drill Size: 13/64

Features and Benefits:Contains Heli-Coil installation tool, a quantity of inserts and complete instructions12 InsertsDrill Size: 13/32

Features and Benefits: Contains Heli-Coil installation tool, a quantity of inserts and complete instructions12 InsertsDrill Size 13/32

Features and Benefits: Comes with high speed drill for chuck. Thread size and length: 20 x .750. Insert per kit: 6 tap. tool type: 3. Insert qty.: 6. drill size: 33/64

Features and Benefits:Thread Size and Length: 7/16-20 x .656Insert Per Kit: 6Tool Type: 3Insert Qty.: 6Drill Size: 29/64

Features and Benefits: Inch fine repair kits Thread size and length: 3/8-24 x .562 Insert per kit: 12 Tool type: 3 Insert qty.: 12 Drill size: 25/64

Features and Benefits: Inch fine repair kits Thread size and length: 5/16-24 X .469 Insert per kit: 12 Tool type: 3 Insert qty.: 12 Drill size: 21/64

Features and Benefits: All kits contain a Heli-Coil tap, installation tool, a quantity of insert and detailed instructions. 6 inserts. Drill size: 17/32