Click the image, which will take you to Massdrop.com. Then, enter PRACTICE in the search box on the Massdrop home page.
7-pin Transparent Plastic "Euro-Style" Profile Cylinder With Dimple Keys
Here is a real puzzle for lock pickers. This plastic practice lock is a real challenge to pick because of two features: It has 7 pin tumblers and, because it uses a "dimple" style key, the keyway is horizontal which leaves almost no room at all for lock picks. The pins are smaller than common pin tumbler locks and this actually adds to the difficulty.
This is a double-cylinder lock and the two sides have different combinations (you get one working key for each side). The workmanship is exceptional but please bear in mind that the lock is, after all, made of plastic -- so treat it somewhat gingerly. The first time you drop it on a hard surface it is liable to crack or break open. Also, I would not recommend using percussive techniques with this practice lock and that includes pick guns. If you choose to bump this lock, be careful how tightly you clamp the cylinder, especially if you are using a bench vise, as this, too, will most likely do a number on it. Also, use firm but controlled taps with the bump hammer. Remember, there is no room in lock picking for brutal strength.
Another precaution: Once picked, be very careful not to rotate the plug beyond the quarter turn position either direction. If you allow it to rotate 180 degrees (to the 6 o'clock point), the top pins will drop into the groove at the bottom of the plug that is normally filled by the presence of the key. While not impossible to recover from, it will teach you brand new cuss words, I promise.
Keep an eye out for our new practice lock stand made expressly for this item. It will be somewhat universal in nature in that it will also accept KIK-style practice locks, of the type we offer here.
ENTER THE LETTERS "HTPL" IN THE SPECIAL INSTRUCTIONS FIELD WHEN YOU GO THROUGH OUR SHORT CHECKOUT PROCESS AND WE WILL INCLUDE, AT NO EXTRA CHARGE, OUR IMMENSELY POPULAR "HOW TO PICK LOCKS" EBOOK IN PDF FORMAT, ON A CD-ROM, WHICH SELLS ON OUR WEBSITE EVERY DAY FOR $29.95!