TCT Double Flute Helps to reduce the effect of overlay joint line. DESCRIPTION Sometimes called 'waterfall effect' giving a non-drip edge to a worktop. TTXC214 has a shorter cut length, ideal for use on 12.5mm thick material. TTXC216 is fitted with self-guided Bearing for use with 15mm thick material. TTXC221 is ideal for use on 19mm (3/4 inch) thick material.