20PC Batch Head Drill Bit Set Fast Second Switch Wind Batch Dual Use

Features:
The batch head can be used for 1/4 inch (6.35mm) handle electric batch, manual screwdriver using; cone drill for woodworking.
A hand clamping tool that can be switched between two ends.
The drill bit of cone drill can be replaced and dismantled, adjustable, chamfering and drill in one.


Specifications:
Material of batch head material: CR-V
Material of twist drill material: HSS
Material of black chamfer drill: 45# steel
Handle of batch head: 1/4 inch handle
package: resealable plastic case
Components: 1pc small wrench+8pcs slotted batch head+8pcs cross batch head+2pcs woodworking drill bit & chamfer+1pc drill chuck
Total quantity: 20pcs
Weight：approx 376g
Size：
6#：0.6 x 5cm/ 0.24" x 1.97"
10#：0.6 x 5cm / 0.24" x 1.97"
CR-V1/4：0.6 X 5 X 0.6cm/ 0.24" x 1.97" x 0.24"
CRV1/8：0.6 x 5 x 0.3 cm/ 0.24" x 1.97" x 0.19"
CR-V3/16：0.6 x 5 x 0.5cm/ 0.24" x 1.97" 0.20"
CRV5/32：0.6 x 5 x 0.4cm/ 0.24" x 1.97" x 0.16"
CR-VPH series：0.6 x 5cm/ 0.24" x 1.97"


Package Included:
20pcs Drill Bit Set With Drill Chuck

1 x 6#
1x 10#
1x small wrench
1 x drill chuck
2 X CR-V1/4
2 X CRV1/8
2X CR-V3/16
2X CRV5/32
8X CR-VPH series







a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a