Die Check Buttons Press Mould Component Stronger Hardness, Abrasion Resistant, Corrosion Resistant. Standard Punch.. Die Check Buttons Press Mould Component Type: Punch & Die for coordinate hole ; Locaing Rings; Engraving punch;AND SO ON. ---High Quality & Competitive Price---Precise manufacture & Performance Process---Material: S45C, SK-105, SKD-11---Hardness: HRC45 - 63°.