| The Delrin body is nicely knurled for a good grip, but both the punch and nut driver are hardened steel. |
| The only maintenance required is a monthly hose down of the knurled surface to remove the dirt which collects there. |
| The torch is simply charged by removing a knurled threaded plug and inserting the phono style charging jack plug. |
| A minor difference can also be seen on the knurled ends of the ejector rods. |
| The bellows holder support is made of acetalic resin and can be repositioned by loosening the knurled lock nut. |
| Those knurled wheels on the back of the choil also serve to improve purchase. |
