Thruty Sleeve is a rigid PVC tube of 2mm wall thickness, supplied in 2 metre lengths, which can be easily cut to the required size.

It is used as an expendable sleeve over tie bolts, facilitating their removal and also acting as a spacer to ensure the correct width of wall.

It as available as either smooth or rough sleeve, and with sizes for both the 15mm and 20mm Tie Bar System.