... Outer DiameterInner HoleGrit No.80mm(3")M14, M16, or 5/8-11"/Snail Lock30/40#,50/60#,80/ ... "/Snail Lock125mm(5")M14, M16, or 5/8-11"/Snail Lock150mm(6")M14, M16, or 5/8-11"/Snail Lock180mm(7 ... ")M14, M16, or 5/8-11"/Snail ... be ordered by customer. Features: Used for concrete or floor grinding and surface removal.Various bonds available for ...