There are filters in the threads to filter out particulates
Expansion is created by tightening a threaded bolt which draws a tapered cone expanding a sleeve against the walls of the hole
Cylindrical tip
Package included: 3 pcs x ABS Plastic Rods
3Meter 10Ft 0.2x10mm Nichrome Flat Heater Wire for Heating Elements Deadbolt Locks There are filters in theNichrome is usually used for high temperature furnaces in the heat treating, ceramics, glass, steel, and electronic industries. Other common applications include: heating elements (hair dryers, ovens, toasters, kilns), model and high power motor and recovery charge, heat sealers, poly cutters, foam cutters, resistors, rheostats, current temperature controls, lab loops, release mechanisms, support in kilns.