Professional thread repair kit for commercial or occasional use BaerFix thread repair kit manufactured in Germany Ideal for repairing damaged or stripped internal threads Suitable for thread reinforcement or thread repair Easy and simple to use No re tapping is necessary with this tool Creates a stronger internal thread in softer materials Permanent repair to worn and damaged threads Imperial size UNF 7/16" x 20 This items cuts its own threads High connection with work piece for strength and durability Corrosion resistance Suitable for all metal and plastic applications The joints created are vibration resistant, wear free and have a high load capacity in materials with low shearing strength The inserts are manufactured from case hardened steel and then zinc plated for maximum hardness Manufactured according to tolerance ISO 2768- Very high pull out strength SIMPLE TO USE 1. Clear the damaged thread with a drill 2. Screw the BaerFix insert with the cutting slides pointing downwards on the inserting tool and then lock the BaerFix insert with the nut by wrench 3. Screw the BaerFix insert into the borehole, the BaerFix thread insert is self-tapping and the inserting tool has a 1/4" hexagonal shank and can be used by either a cordless drill or a socket / spanner 4. Unlock the counter nut with a spanner or socket off the inserting tool SET INCLUDES THE FOLLOWING • 1 x 15.25 mm HSS drill • 1 x installation tool • 5 x case hardened imperial treaded inserts (UNF 7/16" x 20) Comes in a blow molded case for easy storage and transportation