This patented tool swivels and locks in any position. The ergonomic handle fits perfectly into the hand with the rubber insert preventing slip. Use with brass or stainless steel channels, sold separately. Option of 0 or 30 head. 0 Straight Head cleans low windows right to the bottom moulding and allows you to squeegee at a distance from the glass. Compatible with brass and S channel. Fits the ErgoTec locking cone for safety.