Hand brace drill. 
Product specifications: 1/4 inch, 3/8 inch.
Clamping range: 0.6-6mm (1/4 inch) and 1.5-10mm (3/8 \")
Outline dimensions (including drill chuck) : 1/4 inch model -30x8. 3/8 \"-31x8.2x7cm.
Gross weight of original packaging: 1/4 inch -650g; 3/8 \"-710g.
Product features:
1. Adopt the steel quality of no.45, the precision silicon melting process casting drill frame and hand wheel;
2. High strength ABS engineering plastic handle with hollow handle, which can be stored in spare drill chuck;
3. Powder metallurgy process precision casting gear, high precision, hardening and hard, wear resistance;
4. Double-gear drive mechanism, flexible operation of hand, not easy to die;
5. Using the key drill chuck with common hand electric drill, the clamping precision is high, and the drill bit is not easy to be eccentric.
Scope of application:
The product does not need any power supply, and the manual control speed and drilling position are easy to control and safe compared with the electric drill, but low speed, low efficiency, and small transmission torque, therefore.
It is not suitable for hard metal material, ceramic tile, masonry, concrete, etc.
Suitable for wood, bamboo, soft sheet metal, copper, aluminum, plastic, PVC, acrylic, glass fiber board, circuit board, etc.