New Precision Aluminum Flexible Shaft Coupler. 6.35MM x 8MM / 1/4" X 8MM (SHAFT INPUT DIAMETERS)
Clamp Type with set screws

Outside Dimensions 25mm (OD) x 30mm (Length)

Torque (N.m / Oz/in): Rated 1.5, Max 3 | 212, 424

Max Speed: 6000rpm