WUTA 3G Interchangeable-Head Punch

Name: WUTA 3G Interchangeable-Head Punch
Brand: WUTA

Third-generation interchangeable-head stitching punch

Brand: WUTA

A 420 martensitic stainless-steel shaft/head system; the prongs can be removed and replaced individually.

3G Leather Punches Head Replaceable Pricking Iron Removable Diamond Olive Round Hole French Style Chisel DIY Craft Tools| WUTA

Features

Heat treatment, hardening, blackening, rust protection and laser measurement marking. Black electrolytic coating for acid/alkali and wear resistance.
Round awl head 1 mm, hollow round head 1–1.3 mm; spacing 3 / 3.38 / 3.85 / 4 / 5 / 6 mm. The round awl is for smaller holes and fine stitching, the hollow head is for larger holes and easier thread passage.
The standard thread combination shows a round awl and a hollow round head. Hexagonal, diamond and olive-shaped heads are sold separately; choose the tool/head variant carefully. There's no need to replace the whole prong set for a damaged tooth.
Polished hexagonal teeth rotated 90° give a straight/reverse slant. The blunt tooth tip is designed to reduce thread wear and support double wavy stitching.
For rustic-style leather goods, hand-sewn steering wheels, thick leather stitching, sofa/seat upholstery and reverse stitching. A smaller hole mark purpose is indicated after the bag is turned inside out.
Saddle, Single, Z, Baseball/V, Butt, Cross, Box and French stitch methods are listed. Do not apply excessive force to the sharp tip; use a soft protective surface such as leather.
Wipe off the protective oil before first use; when storing, re-oil and keep in a dry, ventilated place.
Per the compatibility chart, the 3rd generation has a head mounting slot and a through-hole, with a 2.5 mm head seating diameter. The 2nd generation also has a 2.5 mm diameter and a through-hole but no mounting slot; only the round heads shown in the chart are compatible. The 1st generation's 2.4 mm head is 0.1 mm smaller and is not interchangeable between generations.
In the photos, the heads sold with the tool are 1.0 mm hollow round; other shapes are purchased separately. The screw is loosened/tightened with a small L-wrench, and the tooth and tooth holder are removed and replaced. A plastic or nylon mallet, a soft protective pad and a vertical strike are shown. Excessive force should not be applied especially on a 1–2 tooth tool.

Specifications

Product group	Hole punching tools
Material	420 martensitic stainless steel
Processing	Heat treated, hardened, blackened, rust-protected, laser marked
Hole size	Hole size: round awl 1 mm; hollow round 1–1.3 mm
Thread pitch	Prong pitch: 3 / 3.38 / 3.85 / 4 / 5 / 6 mm
Sewing methods	Saddle, Single, Z, Baseball/V, Butt, Cross, Box, French
Manufacturer's product name	3G Leather Punches Head Replaceable Pricking Iron Removable Diamond Olive Round Hole French Style Chisel DIY Craft Tools\| WUTA