Feature

●Material: Welded from high-quality tungsten carbide, integral heat treatment, high temperature quenching, high density, high hardness, not easy to burr, good toughness, tungsten steel cutter head, sharp and durable, long service life, very suitable for concrete, brick, cement and other structural wall openings.
●High opening efficiency: 135-degree finely ground tungsten steel cutter head, sharp and durable, easy to cut into the wall, fast opening speed, and ensure the hole is smooth
●Precise hole positioning: Equipped with 3 center positioning drill bits, the positioning drill bit can make sure that the hole opening located in correct place. NOTE: After positioning, please take out the central positioning drill bit and then continue to open the hole. This saves time and effort, and it can extend the life of the center drill.
●Smooth chip evacuation: Each hole opener is designed with a chip evacuation hole, which can realize double chip evacuation inside and outside, with high chip evacuation efficiency, which can prevent the clogging of chips effectively.And come with a long SDS plus shank connecting rod(length about 8-7/10 Inch), which can realize long-distance drilling.
●Package included: Total come with 3pcs hole saw: 1-3/8", 1-31/32", 2-9/25", 1pcs 8-7/10" SDS Plus connecting rod, 3pcs 4-1/3" center positioning drill bits. These hole saw kits can compatible with light hammers and widely used in indoor and outdoor decoration work.

Description

Features:


Good quality material Welded from high-quality tungsten carbide, integral heat treatment, high temperature quenching, high density, high hardness, not easy to burr, good toughness 135 degree finely ground tungsten steel cutter head, sharp and durable	Easy for chip evacuation Each hole opener is designed with a chip evacuation hole, which can realize double chip evacuation inside and outside.	SDS plus handle Designed with SDS plus handle, strong clamping force, non-slip.

Size

Package included:

Total come with 3pcs hole saw: 1-3/8", 1-31/32", 2-9/25"
1pcs 8-7/10" SDS Plus connecting rod
3pcs 4-1/3" center positioning drill bits

Operation Steps


Step 1 Insert the centering drill into the connecting rod, making sure the groove surface is parallel the screw hole.	Step 2 Tighten the screw to make sure the center drill is fixed.	Step 3 Tighten the cement hole opener with the connecting rod.	Step 4 When the opening position is determined, please immediately remove the central drill, reinstall the hole opener and drill (otherwise, the central drill is easy to loosen during the hole opening, and affecting the hole opening efficiency).