Tool Handle SK40-ER20-100 for SK Milling Machine, CNC Stright Shank End Mill Side Lock Tool Holder 20mm Hole 1-13mm Drill Chuck Suitable for ER Clamp: Amazon.com: Tools & Home Improvement
2pcs/lot SK40 40mm Linear Bearing Rail Shaft Support XYZ Table CNC Router SH40A: Amazon.com: Industrial & Scientific
Amazon.com: SKP PRO AUDIO Compact Loudspeaker (SK-40 WH) : Electronics
Steel Dragon Tools SK 40 Hand Crimping Cable End Wire Peeler Splicer Knife 3/4" - 1 9/16" Wires - Wire Strippers - Amazon.com