This is a small cage for The Cherry Keeper Chastity Cage with the Total TouchStop, and optionally, the HeadLock feature, offering a total length of ~2.4" (61mm).  To have a complete product you must have two parts, a ring and a cage.This cage is designed to be a good starting size for growers, and offers a circular shape to the cage for an easy fit.  The spacing of the bars at the front means urination won't be a problem, while the cross bars prevent the tip from slipping through.  [size=14px]Total TouchStop[/size]Total TouchStop is a mesh that covers all segments of a Cherry Keeper Cage except the tip.  TouchStop is designed to prevent access to areas of skin within that portion of the cage while still allowing air and water access to the skin beneath.[size=14px]Headlock[/size]The Headlock feature adds a smaller ring to the entrance to the cage, restricting the opening in such a fashion as to hold the head in place when properly sized.  The Headlock ring will also put an end to casual pull-out attempts if a sufficiently large Headlock size is chosen.  No device of this style is 100% secure, but Headlock makes it so that a serious effort must be put in to escape.Headlock is offered in three variations: Small (1.5 mm), Medium (3.0 mm), and Large (4.5 mm).  The Size refers to the offset between the cage ring and the smallest headlock ring, with the Large variant having the smallest opening.If you're unsure of which to choose, choose the Medium for the best balance of comfort and anti-pullout. Product DetailsBar Profile: Circular - 5 mm dia.Inside Diameter: 35 mm x 35 mmHeadlock Restriction: Extra Small : No Headlock Small : (-1.5 mm) 32.0 mm x 32.0 mm Medium: (-3.0 mm) 29.0 mm x 29.0 mm Large : (-4.5 mm) 26.0 mm x 26.0 mm Extra Large : (-6.0 mm) 23.0 mm x 23.0 mm Cage Depth in front of HeadLock: 35 mmRing to Cage Gap: 8.0 mmTotal Length: 61 mmLocking Mechanism: Utilizes a standard chastity lock cylinder (not included) Front Gap Spacing: 36mm ring: 11.6mm38mm ring: 11.8mm40mm ring: 12.3mm42mm ring: 13.0mm44mm ring: 14.1mm46mm ring: 15.3mm48mm ring: 16.8mm50mm ring: 18.5mmCage renders and diagrams may be shown with a compatible Cherry Keeper Ring and/or brass lock, which are not included.  Rings and locks are sold separately.This cage is only compatible with Cherry Keeper Rings.   It is NOT compatible with New Fun Rings or rings from other devices.