Your search for "MS 661 C-M" revealed the following:

Stihl | MS 661 C-M MAGNUM® Gas Chainsaw | 36 in Lightweight Bar w/ STIHL RAPID™ HEXA™ 3/8" pitch 0.050" gauge 114 drive links (33 RH 114) (1144 200 0466)

Stihl | MS 661 C-M MAGNUM® Gas Chainsaw | 28 in. Bar w/ STIHL RAPID™ HEXA™ 3/8" pitch 0.050" gauge 91 drive links (33 RH 91) (1144 200 0463)

Stihl | MS 661 C-M MAGNUM® Gas Chainsaw | 36 in. Bar with STIHL RAPID™ Super 3/8" pitch 0.050" gauge 114 drive links (33 RS 114) (1144 200 0336)

Stihl | MS 661 C-M MAGNUM® Gas Chainsaw | 32 in. Bar w/ STIHL RAPID™ Super 3/8" pitch 0.050" gauge 105 drive links (33 RS 105) (1144 200 0464)

Stihl | MS 661 C-M MAGNUM® Gas Chainsaw | 20 in. Bar with STIHL RAPID™ Super 3/8" pitch 0.050" gauge 72 drive links (33 RS 72) (1144 200 0402)

Stihl | MS 661 C-M MAGNUM® Gas Chainsaw | 25 in. Bar with STIHL RAPID™ Super 3/8" pitch 0.050" gauge 84 drive links (33 RS 84) (1144 200 0337)

Stihl | MS 661 R C-M MAGNUM® Gas Chainsaw | Wrap Handle | 36 in. Bar w/ STIHL RAPID™ HEXA™ 3/8" pitch 0.050" gauge 114 drive links (33 RH 114) (1144 200 0470)

Stihl | MS 661 R C-M MAGNUM® Gas Chainsaw | Wrap Handle | 28 in. Bar w/ STIHL RAPID™ HEXA™ 3/8" pitch 0.050" gauge 91 drive links (33 RH 91) (1144 200 0468)

Stihl | MS 661 C-M MAGNUM® Gas Chainsaw | 36 in. Bar w/ STIHL RAPID™ HEXA™ 3/8" pitch 0.050" gauge 114 drive links (33 RH 114) (1144 200 0465)

Stihl | MS 661 R C-M MAGNUM® Gas Chainsaw | Wrap Handle | 28 in. Lightweight Bar w/ STIHL RAPID™ Super 3/8" pitch 0.050" gauge 91 drive links (33 RS 91) (1144 200 0412)

Stihl | MS 661 R C-M MAGNUM® Gas Chainsaw | Wrap Handle | 36 in. Bar with STIHL RAPID™ Super 3/8" pitch 0.050" gauge 114 drive links (33 RS 114) (1144 200 0340)

Stihl | MS 661 C-M MAGNUM® Gas Chainsaw | 36 in. Lightweight Bar with STIHL RAPID™ Super 3/8" pitch 0.050" gauge 114 drive links (33 RS 114) (1144 200 0406)

Stihl | MS 661 R C-M MAGNUM® Gas Chainsaw | Wrap Handle | 28 in. Bar with STIHL RAPID™ Super 3/8" pitch 0.050" gauge 91 drive links (33 RS 91) (1144 200 0420)

Stihl | MS 661 C-M MAGNUM® Gas Chainsaw | 28 in. Bar with STIHL RAPID™ Super 3/8" pitch 0.050" gauge 91 drive links (33 RS 91) (1144 200 0339)

Stihl | MS 661 C-M MAGNUM® Gas Chainsaw | 32 in. Lightweight Bar with STIHL RAPID™ Super 3/8" pitch 0.050" gauge 105 drive links (33 RS 105) (1144 200 0405)

Stihl | MS 661 C-M MAGNUM® Gas Chainsaw | 25 in. Bar w/ STIHL RAPID™ HEXA™ 3/8" pitch 0.050" gauge 84 drive links (33 RH 84) (1144 200 0462)

Stihl | MS 661 R C-M MAGNUM® Gas Chainsaw | Wrap Handle | 25 in. Bar w/ STIHL RAPID™ HEXA™ 3/8" pitch 0.050" gauge 84 drive links (33 RH 84) (1144 200 0467)

Stihl | MS 661 R C-M MAGNUM® Gas Chainsaw | Wrap Handle | 20 in. Bar with STIHL RAPID™ Super 3/8" pitch 0.050" gauge 72 drive links (33 RS 72) (1144 200 0409)

Stihl | MS 661 C-M MAGNUM® Gas Chainsaw | 28 in. Lightweight Bar with STIHL RAPID™ Super 3/8" pitch 0.050" gauge 91 drive links (33 RS 91) (1144 200 0404)

Stihl | MS 661 R C-M MAGNUM® Gas Chainsaw | Wrap Handle | 25 in. Bar with STIHL RAPID™ Super 3/8" pitch 0.050" gauge 84 drive links (33 RS 84) (1144 200 0410)