Feature: The shell is made of high hardness aluminum casting material, which is durable and ber. It's not tiring to work for a long time, and the human body feels comfortable holding it. Alloy steel forged gun head, durable, labor-saving and efficient. The handle is made of hard plastic, and the surface is non slip. The high strength link rod can better match the gun drill. Specification: Usage: Draw 2.4 / 3.2 / 4.0 / 4.8mm core-pulling rivets Main material: aluminum alloy Package weight:451g Package size:20X5x3cm User Manual: 1. Adjust the drill to a suitable gear. 2. Open the electric drill chuck, insert the adapter and forward clamp joint. 3. Turn on the reverse function of the drill until the sound of "dada" is heard, and then put in the willow nail of appropriate specification. 4. Then turn on the forward rotation function to align the drilling hole and insert the willow nail. 5. Then turn on the reverse function and exit the willow nail. Package List: 1 X riveted adapter 1 X auxiliary handle 4 X rivet head 1 X wrench