Dry carbon (CFRP) cartridge spacers [set of 3: 2 x 1.0mm, 1 x 0.5mm] for DL-103 are for sale. These cartridge spacers are made from audio-grade dry carbon fiber sheets, 18mm wide and 23mm long. By combining 0.5mm and 1.0mm thick sheets, you can adjust the thickness in 0.5mm increments from 0.5mm to 2.5mm, allowing you to enjoy the changes in sound depending on the spacer thickness. The screw hole positions were measured based on the instruction manual and the DL-103 I have on hand. Unlike other products (20mm x 20mm with a screw hole in the center), the cartridge will not protrude, and the cartridge and mounting shell can be fixed without any gaps, resulting in a neat appearance. Furthermore, the screw holes of the SHURE V15Ⅲ are positioned almost symmetrically to the DL-103 series, so this product can be applied. ◎Audio-Technica shells are generally narrower (approx. 17mm). If you request it, we will send you a modified version with a width of 17mm free of charge. We will also respond flexibly to other requests.◎ ※Shipping is planned via Japan Post "Click Post". (Click Post has no guarantee, but you can track the delivery status with the inquiry number.) ◆◆We also have various other dry carbon audio accessories for sale.◆◆ [User Reviews] ① I received the product. Thank you for the super-fast shipping. The sound changed dramatically. I liked it. Thank you for kindly accommodating my special order. You are a very reliable seller. I will be sure to order again. ② Height adjustment was very troublesome for SME3009R. I matched 2mm spacers for DL-103 and 1mm for V15VxMR, and GRADO ME+MONO is just right without spacers. It's heaven. Thank you. ③ The problem of arm level when combining SL1200 and dl103r was solved. The sound quality is also clear and bright, perhaps due to the carbon effect. It was a very satisfying transaction with prompt shipping and a great product for the price.