AQS is a leading worldwide supplier of pneumatic score knife holders. We offer a holder superior to many on the market with exact width size, clean movement and secure knife fit. All AQS parts are 100% interchangeable with units currently on the market. Each unit is assembled, tested for leakage and smooth operation. Thickness is checked with precision micrometers an is held to +/- .001” Our pneumatic holders are available with a “friction free” coating that reduces heat and extends holder life. We offer these holders in sizes of ½”, 12mm, 9 mm, & .375”.