Nathe Liverpool Long Cheek Driving 20mm Ported Driving Bit Bit Size:145mm The Shires Tom Thumb with The Shires Tom Thumb with Brass Alloy Mouth bit has a brass alloy mouth which assists with salivation Acid Ease is designed to fit easily into a horse’s daily routine Nathe Liverpool Driving bit 20 mm with port long cheeksclassical driving bitvariable rein options to adjust the leverage effect on the polleven distribution of pressure on the tonguelong shank: slightly delayed effect with stronger poll pressurecurb chain not includedOverview of the advantages" made of high quality Thermoplast" for satisfaction and motivation on sensitive and mouth sensitive horses" excellent tolerance anti allergic" food safe solvent free no plasticisers" smooth surface no eraser effect" temperature neutral high flexibility when cold" dimensionally stable high mechanic resistance" steel core in Standard bits (except size 110 mm)" side parts made of high quality stainless steel" Made in Germany