Material:45# steel
Size:3mm/4mm/5mm/6mm/7mm/8mm/10mm/15mm/20mm/25mm/30mm
3mm:pore size max:3.5*2mm
4mm:pore size max:5.1*3.2mm
5mm:pore size max:5.8*3.4mm
6mm:pore size max:7*4.3mm
7mm:pore size max:8*5mm
8mm:pore size max:9*5.6mm
10mm:pore size max:12*7mm
15mm:pore size max:18.5*10mm
20mm:pore size max:24*14.5mm
25mm:pore size max:29.5*18mm
30mm:pore size max:34.5*24.5mm
it's about size,will a little error,please understand,
How to use:
pad a good shield directly after the hammer with a hammer. Rubber hammer wood hammer steel hammer can (recommended with steel hammer) 0.5-25mm recommended with about 300g heavy steel hammer. 26-35mm recommended with 500g heavy steel hammer, more than 35mm recommended more than 1000g heavy hammer.
This items may be have a little rust,but does not affect to use them.