Faithfull FAIAD17860 Fibre Backed Sanding Discs 178mm x 22mm 60G (Pack 25) Waders 48 21 J11 SB Precision Colour:M 48 21 J11 SB Precision Circlip Pliers heavy duty in continuous operation: up to 10 times longer service life compared to turned tips just plug into any USB A charger for up to 15 hours of continuous use with a four hour charging time (depending on the charger unit) Aluminium oxide is bonded to a tough fibre backing giving an extremely durable disc with a wide variety of applications Faithfull Fibre Backed Sanding Discs are designed primarily for use on angle grinders which must be fitted with a suitable backing pad