Caramel Pudding switches come with a modified UPE Stem, a more recent material as compared to those usually offered by HMX. HMX's version of UPE is modified to increase its strength as well as durability, making it less maleable compared to those offered by other manfacturers. The goal of this switch is to make them sound as deep as possible and I honestly think they haven't missed the mark when compared against other HMX offerings. If you're looking for real THOCK I would highly recommend checking out the Summertime V2s linked here. Linear Operating Force: 45±5g Bottom-out Force: 52±5g Pre-travel: 2.0±0.5mm Total-travel 3.60±0.3mm Spring: 22mm single-stage spring Top: PA12 Bottom: P66 Stem: Modified UPE 5 pin Factory Lubed Manufactured by HMX Factory lubrication: Yes, mixed GPL105&GPL205 on leaf spring, stem feet, and bottom housing rails. Dry film lube on springs Switch style: MX Style Opening with 5 pins By purchasing, you agree to our disclaimer for the purchase of mechanical switches.