Hotop M4 x 10 mm Carbon Steel Threaded Knurled Thumbscrew Screw on Knobs Grips Black Round Clamping Screw, Black (10) Item Package Quantity:10 or daily heat

or daily heat

and squeeze handles to open jaws (3) position jaws around stem (4) release handles and tool firmly holds stem in a fully extended position

High efficiency

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Hotop M4 x 10 mm Carbon Steel Threaded Knurled Thumbscrew Screw on Knobs Grips Black Round Clamping Screw, Black (10) Item Package Quantity:10 or daily heatHotop M4 x 10 mm Carbon Steel Threaded Knurled Thumbscrew Screw on Knobs Grips Black Round Clamping Screw, Black (10) Features: Easy to use: The package includes 10 threaded knurled thumbscrew, which can be installed in any place you need, which can meet your daily use and replacement. Quality carbon steel material: The male thread knurled clamping knobs is made of quality carbon steel, with good hardness, strength, corrosion resistance and wear