PPL/PPLV Pneumatic Knife Holder The PPL and PPLV knife holder are part of the Classic Series of Mario Cotta knife holders. Designed for the most demanding applications, these 100 mm knife holders combine a generous vertical and horizontal thrust. The oversized body makes it very resistant to impact and increases holder life. The PPLV version is perfectly suited for high speed cuts. Reliable, simple and long-lasting, this series of knife holders are ideal for any application. Keep reading to find out more.