Wheels Manufacturing Seatpost Shaft Block Tool. Precision machined anodized aluminum clamps designed to allow for easy and secure clamping of round suspension components specifically bike dropper seat posts during service. Designed with strong magnet inserts to keep the shaft clamps securely in place when used with a vice clamp.

Includes 1 pairs of of shaft clamps to fit shaft diameters: 30.9 31.6 and 34.9mm