Each LP-5 will come with D-1 style refill in black (Refill will be Zebra JSB-0.5 Gel Pen Refill - D1 - 0.5 mm - Black)
NEW!!
LP-5 will also hold Lamy M22 refill (not included) with no modifications to the pen.
O-ring around body to prevent pen from unthreading during carry.
Integrated o-ring in pen tip used for refill retention allowing quick removal without any components to be loss.
 
Size
Closed Position- the LP-5 measures 2.8 inches (71mm) in length and .43 inches (10.9mm) in diameter -  making it very easy to store in your pocket, purse or any other convenient place.
Posted Position - While in use the LP-5 becomes a full-length pen measuring in at 4.8 inches (122mm) in length and .33 inches (8.4mm) diameter grip making it a very comfortable writing instrument.
 
Weight of the LP-5 is as follows:
Aluminum - 0.4 ounces (12 grams)
Brass- 1.2 ounces (34 grams)
Copper - 1.3 ounces  (37 grams)
Titanium - 0.7 ounces (19.8 grams)