Polished stainless steel Pee Wee Tip patina outside, Knockdown tip that is made by Dead on Dent Tools.

Black PEEK knockdown by Plain Jane PDR

Edgy Tools - The Polished Knob

The black knockdown by Dentcraft Tools is made from Delrin and features a smaller diameter tip.

Delrin Black plastic knockdown Square Shank with a strong magnet inside.  This knockdown will stay stuck to your steel hammer or car panels.

Tequila Peek Desert Tan Fine Screw on Tip

VIP S SIMPLE  PDR Interchangeable  Knockdown  Aluminum core No magnet no hex head - simple Standard thread 5/16 Thick soft rubber cushion grip to reduce vibrations 3 1/2" long  (98mm) 4...

3″ or 3.5" Carbon Fiber Knockdown without Tip.  2 small magnets to keep from rolling. 5/8″ Diameter which is a bit fatter than other carbon knockdowns. also comes in square...

Tequila Peek Screw on Tip Fine