Speed up your Brew Day with the NEW Spike counterflow wort chiller. The hot wort flows through the inner convoluted copper tubing, while cold water flows in the opposite direction through the stainless steel outer tubing. This unique design offers cooling speeds 4x quicker than our previous chiller! NPT Chiller Specs: 1/2" inner high efficiency copper convoluted tubing 3/4" outer stainless-steel shell 16' total length (3) 1/2" NPT fittings for wort in, wort out and water out (1) Standard garden hose fitting for water in 6.3" tall x 10.5" wide NPT Wort Chiller Essential Add-On Parts Include: MQC x MNPT Fitting (x3) NPT Probe Hex Nipple NPT Tee Fitting Tri-Clamp Chiller Specs: 1/2" inner high efficiency copper convoluted tubing 3/4" outer stainless-steel shell 16' total length (3) 1.5" tri-clamp fittings for wort in, wort out and water out (1) standard garden hose fitting for water in 6.3" tall x 10.5" wide TC Wort Chiller Essential Add-On Parts Include: 1.3" MQC Fitting (x3) TC Probe 1.5" TC Clamp and Gasket (x5) TC Tee Fitting