This incredibly simple to use kit eliminates all the mess and guesswork inherent with most other casting methods. Shake-N-Cast contains 42oz. (1191.7g) of proprietary gypsum casting material packaged with an internal premeasured water capsule. The mixture is always the correct consistency! Due to its exceptional strength, Shake-N-Cast is fast becoming the preferred choice of crime scene specialists and crime laboratory personnel. Typical casts are only 0.5 to 0.75 (13mm to 19mm) thick. No reinforcement is needed. Each kit is sufficient for casting a full-sized adult shoe print. Sold 1 each.