Knew Concepts Mk.IV 3" HD Saw Frame with Lever Tension & Swivel Blade Clamps Handler 751) is a world-renowned Swiss-made

751) is a world-renowned Swiss-made reciprocating hammer handpiece trusted by professional stonesetters and jewelers worldwide

1-1/2" for material up to 5/8" thick (ships set to standard 2-1/2" stroke)

Made in England by Durston

Steel construction—the current standard material since the late 1990s

Knew Concepts Mk.IV 3" HD Saw Frame with Lever Tension & Swivel Blade Clamps Handler 751) is a world-renowned Swiss-madeThe Knew Concepts Mk. IV 3" Heavy Duty Jeweler's Saw Frame combines a cam lever tension system with 360 swivel blade clamps for maximum rigidity and cutting control. The upgraded Mk. IV design features a heavier frame that delivers up to 60 pounds of blade tensiontwo to three times greater than earlier generationseliminating frame flex and dramatically improving accuracy on dense or hard materials. Machined from heat treated aluminum, this frame is