Machine selection depends on a variety of variables. These include available space, training experience, gym capacity requirements and budget. We will be happy to discuss your requirements and quote a package.

Adjustable dumbbells may be plate loaded or ‘automatic’. The user can select the load required for an exercise. These are suitable for home use but the constant adjustment of dumbbell weight can be time consuming and annoying.
Commercial gyms tend to use Racks of dumbbells. These consist of set of dumbbells preset to a given weight. These vary in shape, (Hexagonal or Round) construction, (plates or solid) and composition, (Rubber, Chrome or cast). Selection is usually based on preference and price. Obviously Hex dumbbells do not roll which can be useful in certain environments, (i.e. Cruise ships).

Weight plate selection is usually based on user preference and price. Commercial options include Tri Grip, (easier to handle) Rubber Coated and plain cast Metal. All of these are extremely durable. Calibrated plates are used for competition. Their weight is very accurate, (to within 5gms) and they tend to be very expensive due to this. Weights stocked by Gymwarehouse display their mass in both Kg and Lb.
Some domestic options are available which are sand or water filled. These tend to be bulky and very disappointing.