Herman Sprenger ULTRA-PLUS prong collar - semi-slip - short links - black stainless steel - 50 cm / 3 mm

The Herman Sprenger ULTRA-PLUS prong collar (a training collar with adjustable, evenly spaced prongs) in a black finish - a German maker with over 150 years of tradition, whose equipment is a standard in professional dog training worldwide.

Construction and how it works

A central plate (centerplate) spreads the pressure evenly to both sides of the dog's neck, taking the load off the sensitive windpipe. The links are rounded, with no sharp edges. An extra chain runs through the collar to limit how far it tightens, so the correction stays precise and controlled.

The collar goes on over the dog's head in the usual way.

Short links, stronger wire

This version pairs a 3 cm link (as on the 2.25 mm version) with a thicker 3 mm wire. Shorter links allow a more precise correction, and the stronger wire makes the collar suited to more active dogs for which the 2.25 mm version is too gentle - Belgian Malinois in sport training, for example.

Black galvanic coating

The base of the collar is stainless steel - resistant to corrosion and moisture. The black finish is created by galvanic blackening of the surface followed by polishing. The manufacturer states plainly that the coating is not permanent - over time, at points of contact and friction, it naturally wears through, giving a patina effect.

Sprenger also notes that on dogs with very light or white coats, the hair may discolour where it touches the black collar.

Adjusting the size

The collar's circumference can be matched to the dog's neck by adding or removing links (always an even number). That way the collar lasts a long time, even while the dog is still growing.

Important - for use during training only

This prong collar is intended for on-leash work during active training. It should not be used during free running, transport or while the dog is unsupervised.

Not sure which size is right for your dog? How to measure the neck, and what to do when the measurement falls between sizes, is covered step by step in our prong collar sizing guide.