Climax Part ISCC-025-025 Mild Steel, Black Oxide Plating Clamping Coupling, 1/4 inch X 1/4 inch bore, 11/16 inch OD, 1 1/8 inch Length, 4-40 x 3/8 Clamp Screw auspowers_batchsix Use them in the classroom

Use them in the classroom

This is the most powerful solution to communicate for motorcycling

Includes Replaceable Left and Right Medium Earmolds and 2 Earplugs

which allows to fit nicely on most hands

Climax Part ISCC-025-025 Mild Steel, Black Oxide Plating Clamping Coupling, 1/4 inch X 1/4 inch bore, 11/16 inch OD, 1 1/8 inch Length, 4-40 x 3/8 Clamp Screw auspowers_batchsix Use them in the classroomClimax Part ISCC 025 025 Mild Steel, Black Oxide Plating Clamping Coupling, 1 4 inch X 1 4 inch bore, 11 16 inch OD, 1 1 8 inch Length, 4 40 x 3 8 Clamp Screw Product Features Effective on hard and soft shafts Design fully engages the shaft without marring High axial load and torque capacity Tolerance: +. 003 . 000 Black oxide provides some corrosion resistance