Hole Saw, High Performance, 4-1/2 x 2-3/8-In. Martin's it has a triple O-ring

it has a triple O-ring sealed air chamber

24" Mechanical Pick Up Tool

Shindaiwa and Stihl chain saws

Listed and Complies with Underwriter’s Laboratories Specifications 174

Hole Saw, High Performance, 4-1/2 x 2-3/8-In. Martin's it has a triple O-ringDiablo, 4 1 2" x 2 3 8", hole saw, high performance delivers faster cutting performance & increased productivity, design provides ultimate cutting depth to bore deeper holes in single pass, variable tooth design for faster cuts with less vibration &tool free plug ejection for fast material removal, snap lock, offers quick & easy change system with no down time, 1 snap lock mandrel fits all diablo hole saws, from 5 8" to 6" diameter, for use with wood,