Red Glycol Insulation Hose - 2m Roll x 12mm ID x 16mm OD - Foam 15mm Thick

We recommend to attach the Female JoinTech's x Barbed to your hosing (with a stepless clamp) and the Male x Male Thread to your Fixed Glycol System. This makes it much easier to connect and disconnect using one hand.
KL41102 - JoinTech Female Connector with Auto Shut Off x 13mm Barb
+ KL06729 Bag of 20 x 18.5mm S.S. Stepless Clamps(suit 16-18mm OD)
KL41096 - JoinTech Male Connector with Auto Shut Off x 1/2 Inch BSPT Male

The returning loop from your Jacketed Fermenter or TempTwister we'd recommend going this Red insulation hose to signify warmer (hot). 
For the side that comes directly off the coolant side of your Glycol Chiller we'd recommend using the Blue insulation hosing. SIMPLES!
KL40570 - Blue Insulation Hose - 2m x 12mm ID x 16mm OD - Foam 15mm Thick

Specifications:
2000mm Length x 12mm ID (1/2") x 16mm OD (5/8") of Red Vinyl Hosing
Wrapped in 15mm Foam with 16mm ID x 45mm OD, Roughly 2000mm Long.