Features:
High quality material: made of high hardness carbon steel, square hole drill bit is solid, durable.
Excellent craft: each, went through CNC process, has smooth surface for less friction, sharp tip for better work.
Good design: U-shape groove is great for the discharge of wood chips, to improve the drilling efficiency.
Various dill bits: the set contains different size drill bits, enough, satisfied for multiple demands.
Wide application: it works with mortising machine, very suitable for drilling wood, like MDF, particle board, pine wood, basswood, etc.

Total 5 Combinations for Option
4pcs: 1/4 inch (6.4mm), 5/16 inch (8mm), 3/8 inch (9.5mm), 1/2 inch (12.7mm)
5pcs: 1/4 inch (6.4mm), 5/16 inch (8mm), 3/8 inch (9.5mm), 1/2 inch (12.7mm), 5/8 inch (16mm)
6pcs: 1/4 inch (6.4mm), 5/16 inch (8mm), 3/8 inch (9.5mm), 1/2 inch (12.7mm), 9/16 inch (14mm), 5/8 inch (16mm)
7pcs: 1/4 inch(6mm), 1/4 inch (6.4mm), 5/16 inch (8mm), 3/8 inch (9.5mm), 2/5 inch (10 mm), 1/2 inch (12.5mm), 1/2 inch (12.7mm)
7pcs: 1/4 inch (6.4mm), 5/16 inch (8mm), 3/8 inch (9.5mm), 2/5 inch (10 mm), 1/2 inch (12.7mm), 9/16 inch (14mm), 5/8 inch (16mm)

Specification:
Material: Carbon Steel
Color: Silver
Type: 4pcs / 5pcs / 6pcs / 7pcs / 7pcs (Optional)
Package Size:
4pcs: 22*11*3cm / 8.66*4.33*1.18in
5pcs: 22*13*3cm / 8.66*5.11*1.18in
6pcs: 22.5*8.5*5.5cm / 8.85*3.34*2.16in
7pcs: 22*13*5.5cm / 8.66*5.11*2.16in
7pcs: 22.5*13*5.5cm / 8.85*5.11*2.16in
Package Weight:
4pcs: 670g / 23.63oz
5pcs: 910g / 32.09oz
6pcs: 1140g / 40.21oz
7pcs: 1144g / 40.35oz
7pcs: 1300g / 45.85oz

Note:
Drill bits set only, other accessories in the pictures are not included.
The bit is not suitable for processing metal, glass, plastic, concrete, gypsum board etc.
Due to lighting or other reasons, the picture and material object may slightly differ.
Due to manual measurement, there may be deviation, please in kind prevail.

Packing List:
4 * Drill Bit