medium diamond knurl

yindongjian

can anybody tell me more about the "medium diamond knurl ",or give me the spec.?   thanks a lot!

Mrjianhuili

楼上写不了中文？看中文也不行了？
. H: c2 t' ^& {& o% Q给你个英文的吧！
http://www.quick-tools.at/knurli ... /index.php?navid=37
- N/ |7 v0 k7 p, _
) ]  F) u! I3 e6 Y9 Qit turned up in 2.5 sec on google, were u aware of any more help with your English before asking?

purpledrab

是努氏硬度吧,啥物质这么硬要用衡量宝石饰品的指标来衡量?