8 Piece 3/8" Drive Metric Spline Socket Set TIT15202 Bristle Discs the second number is the

the second number is the distance between the threads in millimeters

Prevents damage to o-rings and oil seals

Standard knotted wire end brushes are more aggresive than solid end brushes

Ideal for PSA-type disc adhesion

Durable and dependable

8 Piece 3/8" Drive Metric Spline Socket Set TIT15202 Bristle Discs the second number is the8 Piece 3 8" Drive Metric Spline Socket Set Features and Benefits: Chrome vanadium steel construction Precise radial spline teeth engage the fastener over a wider area to minimize stress and allow use of higher torque without damage to the fastener or the tool Also fits a variety of other fasteners: 12 point (triple square), Torx, 6 point, square and damaged fasteners Includes 8mm, 10mm, 12mm, 13mm, 14mm, 17mm, 18mm and 19mm sockets on handy socket