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Hollow Paper Drill Bits

Hollow paper drill bits are specialized tools used for making precise holes in paper and other materials. The inside and outside surfaces are micro-polished using the latest honing techniques, which ensures smooth ejection of the chips and longer durability of the products.

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Model:
U-DB78
Brand:
WENYUAN
Code:
8473409090

Wenyuan series hollow paper drill bits are made of a high quality tool steel which guarantees a long tool life with a high edge retention.
Micro finished on the inside to allow smooth ejection of the chips and reduce clogging.
Customization and coating are available.

Straight Shank Hollow Drill Bits	Tapered Shank Hollow Drill Bits(No need screws)

Hollow Paper Drill Bits paper drill bits Electric Paper Drilling Machine Hydraulic Paper Drilling Machine Manual Paper Drilling Machine HSS Paper drill bits Hollow drill bit

Model	Hole Diameter	Shank Diameter	Drill Depth	Total Length
Model	D1(mm)	D2(mm)	L2(mm)	L1(mm)
T30A/T30B/K30	3.0	9.5	20	52
	3.5	9.5	20	52
	4.0	9.5	30	52
	5.0	9.5	30	52
	6.0	9.5	30	52
DK-1	2.0-2.5	11	20	65
DK-1	3.0-8.0	11	30	65
WB50/WB500/ T50/T50A/WB800/ WB50A/WB50B/ DK8083ZD500A/ ZD500B/ZD500C/ NC500A/NC500K	3.0	11	30	78
	3.5	11	30	78
	4.0	11	40	78
	5.0	11	50	78
	6.0	11	50	78
	7.0	11	50	78
	8.0	11	50	78

D1(mm)	D2(mm)	L2(mm)	L1(mm)
2.0-2.5	11	20	55
3.0-3.5	11	30	65
4.0-4.5	11	40	75
5.0-10.0	11	50	85

Model	Hole Diameter	Shank Diameter	Drill Depth	Total Length
Model	D1(mm)	D2(mm)	L2(mm)	L1(mm)
T30A/T30B/K30	3.0	9.5	20	52
	3.5	9.5	20	52
	4.0	9.5	30	52
	5.0	9.5	30	52
	6.0	9.5	30	52
DK-1	2.0-2.5	11	20	65
DK-1	3.0-8.0	11	30	65
WB50/WB500/ T50/T50A/WB800/ WB50A/WB50B/ DK8083ZD500A/ ZD500B/ZD500C/ NC500A/NC500K	3.0	11	30	78
	3.5	11	30	78
	4.0	11	40	78
	5.0	11	50	78
	6.0	11	50	78
	7.0	11	50	78
	8.0	11	50	78

D1(mm)	D2(mm)	L2(mm)	L1(mm)
2.0-2.5	11	20	55
3.0-3.5	11	30	65
4.0-4.5	11	40	75
5.0-10.0	11	50	85

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