They lock securely in place with just a half a twist another half twist they're off. Constructed on a YF weight water resistant polyester cloth backing. Can be ran wet or dry

Product
051144-22393
Description
Three-M-Ite™ Roloc™ Roll-On Coated-Polyester Disc 200/bx
Bx
1.66
Product
051144-22398
Description
Three-M-Ite™ Roloc™ Roll-On Coated-Polyester Disc 200/bx
Bx
29.23
Product
051144-22400
Description
Three-M-Ite™ Roloc™ Roll-On Coated-Polyester Disc 200/bx
Bx
1.13
Product
051144-22401
Description
Three-M-Ite™ Roloc™ Roll-On Coated-Polyester Disc 200/bx
Bx
1.06
Product
051144-22403
Description
Three-M-Ite™ Roloc™ Roll-On Coated-Polyester Disc 200/bx
Bx
1.03
Product
051144-22404
Description
Three-M-Ite™ Roloc™ Roll-On Coated-Polyester Disc 50/bx
Bx
72.04