UltraJaws multi-purpose precision clamps are crafted from the finest quality designs. The innovative closed yoke construction minimizes contamination and corrosion of internal components. A unique shape provides secure gripping and positioning with added benefits like strength and durability. UltraJaws are available in small, medium, and large sizes with a maximum grip range of up to 3.9" (10 cm). UltraJaws clamps are equipped with non-slip vinyl covers as well as additional fiberglass prong covers. Covers can be easily removed for cleaning or replacement purposes. Fiberglass prong covers are recommended for temperatures above 212°F (100°C). The prong height of the UltraJaws multi-purpose clamps makes them an ideal solution for holding and securing glassware with precision ground glass joints. UltraJaws clamps contain extension rods for simple attachment to laboratory lattice frames and other apparatus. Additional holders are available for attaching UltraJaws clamps to a frame or other equipment.