Alegra Handpiece HE-43 Straight Without Spray Small head and ergonomic design. The Alegra straight handpiece is comfortable in the hand. Thanks to the excellent ergonomics, the straight handpieces from W&H prevent excessive strain on your hands during preparation. Your advantages at a glance: • Robust and durable • Ergonomic design • Simple bur changing with the push-button chucking system • Thermo washer disinfectable and sterilizable • External coolant supply (spray clip, coolant hose, nozzle cleaner) available as accessories. HE-43 Features: Dental straight handpiece with twist tension chucking system, for handpiece and contra-angle burs with Ø 2.35 mm (ISO 1797-1). Drive speed: 40,000 rpm, Motor connection according to standard: ISO 3964.