SK40/DIN69872 Pull Stud With Hole And Without Hole Pack of 1 2mm55hrccarbide cutter there are many Chinese brand

there are many Chinese brand also making same inserts so you can just check description of size from other brands to fix this insert

The blades used are of the concave and convex shape

YELLOW TIATNIUM COATED JAWS FOR LONG LASTING LIFE

100MMRear thread for the pull stud is M12X1

Suitable for LNMU0303 insert

SK40/DIN69872 Pull Stud With Hole And Without Hole Pack of 1 2mm55hrccarbide cutter there are many Chinese brandSK40 DIN69872 Pull stud used in CNC machines for BT40 holders. ISO standard name is MAS403. Pull studs are an essential link between machine and tool. The requirements concerning accuracy, rigidity and reliability are very high. Pull studs of low quality not only reduce machine performance but also pose a safety risk. A broken pull stud can cause severe damage to the machine and workpiece, and even injuries to personnel. Made of special steel for